CN109971024A - A kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material and preparation method thereof - Google Patents
A kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material and preparation method thereof Download PDFInfo
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- CN109971024A CN109971024A CN201910260070.3A CN201910260070A CN109971024A CN 109971024 A CN109971024 A CN 109971024A CN 201910260070 A CN201910260070 A CN 201910260070A CN 109971024 A CN109971024 A CN 109971024A
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08G18/58—Epoxy resins
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2205/00—Foams characterised by their properties
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
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- C08J2375/08—Polyurethanes from polyethers
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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Abstract
The invention discloses a kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging materials, are modified and are prepared to polyurethane using epoxy resin, have better low frequency absorption performance relative to existing polyurethane foamed material.The invention also discloses the preparation methods of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material acoustics packaging material, include the following steps: Step 1: epoxy resin is heated to 100 degrees Celsius；Step 2: polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst and foam stabiliser are added in the epoxy resin after heating, stirring obtains the first mixture；Step 3: curing agent and methyl diphenylene diisocyanate are added in first mixture, stirring obtains the second mixture；Step 4: second mixture is poured into mold, after carrying out foaming inclosed molds, takes out, after solidification, obtain the polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material.
Description
Technical field
The invention belongs to the acoustics field of packaging material of sound-absorbing material design field, in particular to a kind of polyurethane rings
Oxygen resin Interpenetrating Networks foam acoustics packaging material and preparation method thereof.
Background technique
With greatly developing for each department such as modern industry, construction industry and traffic transport industry, noise pollution is serious
Affect people's health, work and life.The physiology and mental health that people can be damaged are chronically exposed in noise circumstance.With
Continuous improvement of people's living standards, the requirement to automobile gradually turn from basic walking-replacing tool to more comfortable riding environment
Become.Automaker, which also uses many methods, reduces the overall noise and level of vibration of vehicle, to meet the expectation of customer.
Car acpistocs packaging is usually used in reducing internal car noise level.It refers to related with auto NVH performance each in the narrow sense
The summation of class sound absorption and insulation seal member refers mainly to the acoustic element for reducing air-borne sound acoustic pressure and solves its control propagation road
Noise problem on diameter carries out noise control in terms of leakproofness and sound absorption.Many porous materials have been applied to
The sound absorption field of automobile, such as polyurethane foam, expanded polyolefin, polymethyl methacrylate foam, polyvinyl formal
Foam etc..
Polyurethane foam is a kind of common acoustics packaging material, its light, heat-insulating sound-insulating, comfort with product quality
Well, the advantages that resilience is good, machine-shaping is convenient, safety and sound absorbing performance are good, at low cost, and can pass through and adjust polyurethane
Raw material, formula of material etc. come adapt to product specific performance require and application characteristic.When being applied to sound absorption field for it, matter
Soft, the problems such as low frequency absorption ability is poor, while not changing material thickness, enhancing its frequency acoustic performance seems especially heavy
It wants.
Summary of the invention
An object of the present invention is to provide a kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, makes
Polyurethane is modified with epoxy resin and is prepared, there is better low frequency absorption relative to existing polyurethane foamed material
Performance.
The second object of the present invention is to provide a kind of system of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material
Preparation Method, preparation process is simple, and without harsh reaction condition, the material low frequency absorption coefficient of preparation is high, solves existing sound absorption
The problem of material is to the absorption difference of all-bottom sound.
Technical solution provided by the invention are as follows:
A kind of preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, includes the following steps:
Step 1: epoxy resin is heated to 100 degrees Celsius；
Step 2: by polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst and foam
Stabilizer is added in the epoxy resin after heating, and stirring obtains the first mixture；
Step 3: curing agent and methyl diphenylene diisocyanate are added in first mixture, stirring, the is obtained
Two mixtures；
Step 4: second mixture is poured into mold, after carrying out foaming inclosed molds, take out, after solidification, obtains described
Polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material.
Preferably, first foaming agent uses deionized water；Second foaming agent uses triethanolamine.
Preferably, first catalyst uses N, and N- dimethyl ethyl ether, second catalyst is using quality point
The triethylene diamine solution that number is 33%.
Preferably, the foam stabiliser uses silicone oil, and the curing agent uses triethylene tetramine.
Preferably, epoxy resin, polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, second are urged
Agent, foam stabiliser, curing agent and methyl diphenylene diisocyanate mass ratio are as follows:
40~60:40~60:2~3:2.5~3.5:0.2~0.5:0.8~1.2:1.5~2:1~3:30~35.
Preferably, in the step 2, mixing speed 1200rpm, mixing time are 3~5 minutes.
Preferably, in the step 3, mixing speed 3000rpm.
Preferably, in the step 4, foaming inclosed molds 3~after five minutes, it takes out, solidifies 24 hours at room temperature, obtain
To the polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material.
A kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, the polyurethane-epoxy resin interpenetrating networks
The mass fraction for preparing raw material and each raw material of foam acoustics packaging material are as follows:
40~60 parts of epoxy resin, 40~60 parts of polyether polyol, the first 2~3 parts of foaming agent, the second foaming agent 2.5~
3.5 parts, the first 0.2~0.5 part of catalyst, the second 0.8~1.2 part of catalyst, 1.5~2 parts of foam stabiliser, curing agent 1~3
Part, 30~35 parts of methyl diphenylene diisocyanate.
Preferably, the foaming agent uses deionized water；Second foaming agent uses triethanolamine；Described first urges
Agent use N, N- dimethyl ethyl ether, second catalyst use mass fraction for 33% triethylene diamine solution；Institute
Foam stabiliser is stated using silicone oil, the curing agent uses triethylene tetramine.
The beneficial effects of the present invention are:
(1) polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material provided by the invention, to Low Frequency Sound Absorption
Can be good, low frequency absorption coefficient can reach 0.809.
(2) preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material provided by the invention, in material
Expect in preparation process, no complex device and technique, reaction condition requirement harshness is asked in the reaction for solving epoxy resin participation
Topic.
(3) polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material provided by the invention and preparation method thereof uses
Epoxy resin is modified polyurethane foam, effectively improves its flexibility.
Detailed description of the invention
Fig. 1 is the stream of the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material of the present invention
Journey block diagram.
Fig. 2 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in the embodiment of the present invention 1.
Fig. 3 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in the embodiment of the present invention 2.
Fig. 4 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in the embodiment of the present invention 3.
Fig. 5 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in comparative example 1 of the present invention.
Fig. 6 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in comparative example 2 of the present invention.
Fig. 7 is the acoustic absorptivity and frequency relation curve figure of acoustics packaging material obtained in comparative example 3 of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
The present invention provides a kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, the preparation used is former
The mass fraction of material and each raw material is as follows:
40~60 parts of epoxy resin, 40~60 parts of polyether polyol, the first 2~3 parts of foaming agent, the second foaming agent 2.5~
3.5 parts, the first 0.2~0.5 part of catalyst, the second 0.8~1.2 part of catalyst, 1.5~2 parts of foam stabiliser, curing agent 1~3
Part, 30~35 parts of methyl diphenylene diisocyanate.
Wherein, the foaming agent uses deionized water；Second foaming agent uses triethanolamine；First catalyst
Using N, N- dimethyl ethyl ether, second catalyst use mass fraction for 33% triethylene diamine solution；The bubble
Foam stabilizers use silicone oil, and the curing agent uses triethylene tetramine.
As shown in Figure 1, the present invention also provides a kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging materials
Preparation method includes the following steps:
Step 1: epoxy resin is placed in incubator, 100 degrees Celsius are heated to, keeps epoxy resin very big by viscosity
State is converted to thin liquid.
Step 2: by polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst and foam
Stabilizer is added in the epoxy resin after heating, and stirring obtains the first mixture；
Wherein, first foaming agent uses deionized water；Second foaming agent uses triethanolamine；Described first urges
Agent use N, N- dimethyl ethyl ether (catalyst A1), second catalyst use mass fraction for 33% triethylene two
Amine aqueous solution (catalyst A33)；The foam stabiliser uses silicone oil.
Step 3: curing agent and methyl diphenylene diisocyanate are added in first mixture, stirring, the is obtained
Two mixtures；
Wherein, the curing agent uses triethylene tetramine.
Step 4: second mixture is poured into mold, after carrying out foaming inclosed molds, take out, after solidification, obtains described
Polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material.
During the preparation process, epoxy resin, polyether polyol, the first foaming agent, the second foaming agent, the first catalysis used
Agent, the second catalyst, foam stabiliser, curing agent and methyl diphenylene diisocyanate mass ratio are as follows: 40~60:40~
60:2~3:2.5~3.5:0.2~0.5:0.8~1.2:1.5~2:1~3:30~35.
In another embodiment, in the step 2, mixing speed 1200rpm, mixing time are 3~5 minutes.
In another embodiment, in the step 3, mixing speed 3000rpm.
In another embodiment, in the step 4, foaming inclosed molds 3~after five minutes, it takes out, solidifies 24 at room temperature
Hour, obtain the polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material.
Embodiment 1
The preparation process of polyurethane-epoxy resin interpenetrating networks foam acoustical material is as follows:
(1) 60 grams of epoxy resin E44 are placed in incubator, are heated to 100 degrees Celsius, make epoxy resin E44 by viscosity
Very big state is converted to thin liquid；
(2) (1) resulting epoxy resin E44 is placed in dixie cup, 40 grams of polyether polyol, 3630,3 grams of foaming agents (is gone
Ionized water), 3 grams of foaming agents (triethanolamine), 0.35 gram of catalyst A1,1 gram of catalyst A33,1.8 grams of foam stabilisers (silicone oil)
It is added in dixie cup, is mixed with epoxy resin E44, electric blender is used to be stirred with 1200rpm speed at room temperature, stir
3~after five minutes, obtain mixture I；
(3) (2) resulting mixing is added in 2 grams of curing agent (triethylene tetramine), 30 grams of methyl diphenylene diisocyanates
In object I, electric blender is used to be sufficiently stirred rapidly with 3000rpm speed again until uniformly, obtaining mixture II；
(4) gained mixture II in (3) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
As shown in Fig. 2, being reached as high as the region gained acoustics 0~630Hz of packaging material acoustic absorptivity in embodiment 1
0.809, frequency acoustic performance has obtained significant raising.
Embodiment 2
The preparation process of polyurethane-epoxy resin interpenetrating networks foam acoustical material is as follows:
(1) 50 grams of epoxy resin E44 are placed in incubator, are heated to 100 degrees Celsius, make epoxy resin E44 by viscosity
Very big state is converted to thin liquid；
(2) (1) resulting epoxy resin E44 is placed in dixie cup, by 50 grams of polyether polyol, 3630,2.5 grams of foaming agents
(deionized water), 2.5 grams of foaming agents (triethanolamine), 0.5 gram of catalyst A1,2 grams of catalyst A33,1.8 grams of foam stabilisers
(silicone oil) is added in dixie cup, mixes with epoxy resin E44, electric blender is used to be stirred with 1200rpm speed at room temperature
It mixes, stirring 3~after five minutes, obtain mixture I；
(3) (2) resulting mixing is added in 1 gram of curing agent (triethylene tetramine), 35 grams of methyl diphenylene diisocyanates
In object I, electric blender is used to be sufficiently stirred rapidly with 3000rpm speed again until uniformly, obtaining mixture II；
(4) gained mixture II in (3) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
As shown in figure 3, being reached as high as the region gained acoustics 0~630Hz of packaging material acoustic absorptivity in embodiment 2
0.725, frequency acoustic performance has obtained significant raising, and transition is steady between low frequency high frequency.
Embodiment 3
The preparation process of polyurethane-epoxy resin interpenetrating networks foam acoustical material is as follows:
(1) 60 grams of epoxy resin E44 are placed in incubator, are heated to 100 degrees Celsius, make epoxy resin E44 by viscosity
Very big state is converted to thin liquid；
(2) (1) resulting epoxy resin E44 is placed in dixie cup, 40 grams of polyether polyol, 3630,3 grams of foaming agents (is gone
Ionized water), 3 grams of foaming agents (triethanolamine), 0.2 gram of catalyst A1,1 gram of catalyst A33,1.8 grams of foam stabilisers (silicone oil)
It is added in dixie cup, is mixed with epoxy resin E44, electric blender is used to be stirred with 1200rpm speed at room temperature, stir
3~after five minutes, obtain mixture I；
(3) (2) resulting mixing is added in 1 gram of curing agent (triethylene tetramine), 35 grams of methyl diphenylene diisocyanates
In object I, electric blender is used to be sufficiently stirred rapidly with 3000rpm speed again until uniformly, obtaining mixture II；
(4) gained mixture II in (3) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
As shown in figure 4, being reached as high as the region gained acoustics 0~630Hz of packaging material acoustic absorptivity in embodiment 3
0.748, frequency acoustic performance has obtained significant raising.
Comparative example 1
Polyurethane foam acoustics packaging material is prepared using conventional method, specific preparation process is as follows:
(1) by 60 grams of polyether polyol 330N, 40 grams of polyether polyol, 3630,3 grams of foaming agents (deionized water), 3 grams of hairs
Infusion (triethanolamine), 0.05 gram of catalyst A1,1 gram of catalyst A33,1.8 grams of foam stabilisers (silicone oil) are added in dixie cup,
Electric blender is used to be stirred with 1200rpm speed at room temperature, stirring 3~after five minutes, obtain mixture I；
(2) 30 grams of methyl diphenylene diisocyanates are added in (1) resulting mixture I, use electric stirring again
Machine is sufficiently stirred rapidly until uniformly, obtaining mixture II with 3000rpm speed；
(4) gained mixture II in (2) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
As shown in figure 5, only for gained acoustics packaging material 0~630Hz (low frequency) region acoustic absorptivity highest in comparative example 1
It is 0.524.
Comparative example 2
The preparation process of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material is as follows:
(1) 80 grams of epoxy resin E44 are placed in incubator, are heated to 100 degrees Celsius, make epoxy resin E44 by viscosity
Very big state is converted to thin liquid；
(2) (1) resulting epoxy resin E44 is placed in dixie cup, 20 grams of polyether polyol, 3630,1 grams of foaming agents (is gone
Ionized water), 1 gram of foaming agent (triethanolamine), 0.05 gram of catalyst A1,1 gram of catalyst A33,1.8 grams of foam stabilisers (silicone oil)
It is added in dixie cup, is mixed with epoxy resin E44, electric blender is used to be stirred with 1200rpm speed at room temperature, stir
3~after five minutes, obtain mixture I；
(3) (2) resulting mixing is added in 1 gram of curing agent (triethylene tetramine), 25 grams of methyl diphenylene diisocyanates
In object I, electric blender is used to be sufficiently stirred rapidly with 3000rpm speed again until uniformly, obtaining mixture II；
(4) gained mixture II in (3) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
The preparation of acoustical material is not carried out in comparative example 2 by material rate disclosed by the invention, as shown in fig. 6, for comparison
Gained acoustics packaging material 0~630Hz (low frequency) region acoustic absorptivity is only up to 0.274 in example 2, and overall performance is bad.
Comparative example 3
The preparation process of polyurethane-epoxy resin interpenetrating networks foam acoustical material is as follows:
(1) 30 grams of epoxy resin E44 are placed in incubator, are heated to 100 degrees Celsius, make epoxy resin E44 by viscosity
Very big state is converted to thin liquid；
(2) (1) resulting epoxy resin E44 is placed in dixie cup, by 70 grams of polyether polyol, 3630,0.5 grams of foaming agents
(deionized water), 5 grams of foaming agents (triethanolamine), 0.2 gram of catalyst A1,1 gram of catalyst A33,1.8 grams of foam stabiliser (silicon
Oil) it is added in dixie cup, it is mixed with epoxy resin E44, electric blender is used to be stirred with 1200rpm speed at room temperature,
Stirring 3~after five minutes, obtain mixture I；
(3) (2) resulting mixing is added in 5 grams of curing agent (triethylene tetramine), 45 grams of methyl diphenylene diisocyanates
In object I, electric blender is used to be sufficiently stirred rapidly with 3000rpm speed again until uniformly, obtaining mixture II；
(4) gained mixture II in (3) is quickly poured into rectangular mould, foaming inclosed molds is carried out at room temperature, to this
Process continues 3~after five minutes, the material in mold is taken out, continues solidification 24 hours then at room temperature, obtains acoustics packaging material.
The preparation of acoustical material is not carried out in comparative example 3 by material rate disclosed by the invention, as shown in fig. 7, for comparison
Gained acoustics packaging material 0~630Hz (low frequency) region acoustic absorptivity is only up to 0.527 in example 3, and high frequency performance is bad.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. a kind of preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, which is characterized in that including such as
Lower step:
Step 1: epoxy resin is heated to 100 degrees Celsius；
Step 2: polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst and foam are stablized
Agent is added in the epoxy resin after heating, and stirring obtains the first mixture；
Step 3: curing agent and methyl diphenylene diisocyanate are added in first mixture, it is mixed to obtain second for stirring
Close object；
Step 4: second mixture is poured into mold, after carrying out foaming inclosed molds, takes out, after solidification, obtain the poly- ammonia
Ester epoxy resin interpenetrating networks foam acoustics packaging material.
2. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 1,
It is characterized in that, first foaming agent uses deionized water；Second foaming agent uses triethanolamine.
3. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 2,
It is characterized in that, first catalyst uses N, N- dimethyl ethyl ether, and second catalyst uses mass fraction for 33%
Triethylene diamine solution.
4. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 3,
It is characterized in that, the foam stabiliser uses silicone oil, and the curing agent uses triethylene tetramine.
5. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 4,
It is characterized in that, epoxy resin, polyether polyol, the first foaming agent, the second foaming agent, the first catalyst, the second catalyst, foam
The mass ratio of stabilizer, curing agent and methyl diphenylene diisocyanate are as follows:
40~60:40~60:2~3:2.5~3.5:0.2~0.5:0.8~1.2:1.5~2:1~3:30~35.
6. the system of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material described in -5 any one according to claim 1
Preparation Method, which is characterized in that in the step 2, mixing speed 1200rpm, mixing time is 3~5 minutes.
7. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 6,
It is characterized in that, in the step 3, mixing speed 3000rpm.
8. the preparation method of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 7,
It is characterized in that, in the step 4, foaming inclosed molds 3~after five minutes, it takes out, solidifies 24 hours at room temperature, obtain described poly-
Urethane Epoxy Interpenetration Polymer Networks foam acoustics packaging material.
9. a kind of polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material, which is characterized in that the polyurethane epoxy tree
The mass fraction for preparing raw material and each raw material of rouge interpenetrating networks foam acoustics packaging material are as follows:
40~60 parts of epoxy resin, 40~60 parts of polyether polyol, the first 2~3 parts of foaming agent, the second foaming agent 2.5~3.5
Part, the first 0.2~0.5 part of catalyst, the second 0.8~1.2 part of catalyst, 1.5~2 parts of foam stabiliser, 1~3 part of curing agent,
30~35 parts of methyl diphenylene diisocyanate.
10. polyurethane-epoxy resin interpenetrating networks foam acoustics packaging material according to claim 9, which is characterized in that
The foaming agent uses deionized water；Second foaming agent uses triethanolamine；First catalyst uses N, N- diformazan
Benzyl ethyl ether, second catalyst use mass fraction for 33% triethylene diamine solution；The foam stabiliser uses
Silicone oil, the curing agent use triethylene tetramine.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105348473A (en) * | 2015-11-27 | 2016-02-24 | 东北林业大学 | Cellulose-reinforced polyurethane/epoxy resin interpenetrating polymer network hard composite foam material and preparation method thereof |
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2019
- 2019-04-02 CN CN201910260070.3A patent/CN109971024B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105348473A (en) * | 2015-11-27 | 2016-02-24 | 东北林业大学 | Cellulose-reinforced polyurethane/epoxy resin interpenetrating polymer network hard composite foam material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 沈沉等: ""汽车隔音垫用聚氨酯软质高回弹泡沫的吸音性能研究"", 《化学推进剂与高分子材料》 * |
| 花兴艳等: ""聚氨酯/环氧树脂互穿聚合物网络半硬泡沫的结构与性能"", 《材料工程》 * |
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